$753 Cheap Flights from Bucharest (OTP) to Samui Intl. Airport (USM)

View $753 flight on Thu, Nov 5, 2026Opens in a new window

Popular airlines from Henri Coanda Intl. Airport (OTP) to Samui Intl. Airport (USM)

Cheap Flights from Bucharest to Samui Intl. Airport (OTP-USM)

Prices were available within the past 7 days and start at $753 for one-way flights and $1,097 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Thu, Jun 18 - Mon, Jun 22
OTP
Bucharest
USM
Koh Samui
$1,097 Roundtrip, found 5 days ago
$1,097
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Thu, Jun 18 from Bucharest to Koh Samui, returning Mon, Jun 22, priced at $1,097 found 5 days ago
Lufthansa
Wed, Nov 4 - Thu, Nov 26
OTP
Bucharest
USM
Koh Samui
$1,099 Roundtrip, found 3 days ago
$1,099
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Wed, Nov 4 from Bucharest to Koh Samui, returning Thu, Nov 26, priced at $1,099 found 3 days ago
Swiss International Air Lines
Thu, Jun 18 - Mon, Jun 22
OTP
Bucharest
USM
Koh Samui
$1,116 Roundtrip, found 5 days ago
$1,116
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Thu, Jun 18 from Bucharest to Koh Samui, returning Mon, Jun 22, priced at $1,116 found 5 days ago
Swiss International Air Lines
Wed, Nov 4 - Thu, Nov 26
OTP
Bucharest
USM
Koh Samui
$1,152 Roundtrip, found 3 days ago
$1,152
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Wed, Nov 4 from Bucharest to Koh Samui, returning Thu, Nov 26, priced at $1,152 found 3 days ago
Lufthansa
Thu, Jun 18 - Mon, Jun 22
OTP
Bucharest
USM
Koh Samui
$1,157 Roundtrip, found 5 days ago
$1,157
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Thu, Jun 18 from Bucharest to Koh Samui, returning Mon, Jun 22, priced at $1,157 found 5 days ago
Lufthansa
Thu, Jun 18 - Mon, Jun 22
OTP
Bucharest
USM
Koh Samui
$1,221 Roundtrip, found 5 days ago
$1,221
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Thu, Jun 18 from Bucharest to Koh Samui, returning Mon, Jun 22, priced at $1,221 found 5 days ago
Swiss International Air Lines
Thu, Jun 18 - Mon, Jun 22
OTP
Bucharest
USM
Koh Samui
$1,239 Roundtrip, found 5 days ago
$1,239
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Thu, Jun 18 from Bucharest to Koh Samui, returning Mon, Jun 22, priced at $1,239 found 5 days ago
Air France
Wed, Oct 7 - Thu, Oct 29
OTP
Bucharest
USM
Koh Samui
$1,280 Roundtrip, found 3 days ago
$1,280
Roundtrip
found 3 days ago
Select Air France flight, departing Wed, Oct 7 from Bucharest to Koh Samui, returning Thu, Oct 29, priced at $1,280 found 3 days ago
Austrian Airlines
Wed, Oct 7 - Thu, Oct 29
OTP
Bucharest
USM
Koh Samui
$1,301 Roundtrip, found 3 days ago
$1,301
Roundtrip
found 3 days ago
Select Austrian Airlines flight, departing Wed, Oct 7 from Bucharest to Koh Samui, returning Thu, Oct 29, priced at $1,301 found 3 days ago
KLM
Wed, Oct 7 - Thu, Oct 29
OTP
Bucharest
USM
Koh Samui
$1,364 Roundtrip, found 3 days ago
$1,364
Roundtrip
found 3 days ago
Select KLM flight, departing Wed, Oct 7 from Bucharest to Koh Samui, returning Thu, Oct 29, priced at $1,364 found 3 days ago

Frequently asked questions

How much does a flight from Henri Coanda Intl. Airport (OTP) to Ko Samui Airport (USM) cost?
Secure a cheap one-way flight from $753 or cheap return flight from $1,097 from Henri Coanda Intl. Airport (OTP) to Ko Samui Airport (USM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Henri Coanda Intl. Airport (OTP) to Ko Samui Airport (USM)?
The cheapest month to fly from OTP to USM is June, when demand is low. Off-peak months are often when airlines offer better prices between these airports.
What is the cheapest airline that flies from Henri Coanda Intl. Airport (OTP) to Ko Samui Airport (USM)?
To find the cheapest airline that'll fly you from OTP to USM, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Henri Coanda Intl. Airport (OTP) to Ko Samui Airport (USM)?
Direct flights from Henri Coanda Intl. Airport (OTP) to Ko Samui Airport (USM) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from OTP to USM?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Henri Coanda Intl. Airport (OTP) to Ko Samui Airport (USM)?
To arrive at Ko Samui Airport (USM) on schedule, opt for a flight that leaves Henri Coanda Intl. Airport (OTP) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Henri Coanda Intl. Airport (OTP) to Ko Samui Airport (USM) last-minute?
Waiting until just before your departure to book your flight from OTP to USM generally means paying more. Although you may find some last-minute offers, there's no guarantee. Be flexible with your travel plans for a better chance of snagging a bargain.
Is it cheaper to book an OTP to USM flight and hotel package?
Compared with arranging hotels and flights separately, booking an OTP to USM flight and hotel package with Expedia could result in significant savings. What's more, having everything in one easy place will take the stress out of planning your trip. Just secure your flights and select from our wide range of hotels, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Henri Coanda Intl. Airport (OTP) to Ko Samui Airport (USM)?
You can usually reschedule or cancel your OTP to USM flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Henri Coanda Intl.
Destination airport
Samui Intl. Airport
Roundtrip price
$1,097
Distance
4969 mi

Book with confidence

Bucharest to Samui Intl. Airport Flights

The cheapest times to fly from Bucharest to Samui Intl. Airport

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Bucharest to Samui Intl. Airport are during the month of June. You can find some of the cheapest flights from Bucharest to Samui Intl. Airport with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Bucharest to Samui Intl. Airport

Sunday is one of the best days to book for cheap flights from Bucharest to Samui Intl. Airport: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Bucharest to Samui Intl. Airport

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Bucharest to Samui Intl. Airport in 2026. You can also book with separate airlines for your outbound and return journeys, from $753 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Bucharest to Samui Intl. Airport flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Bucharest to Samui Intl. Airport airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Bucharest to Samui Intl. Airport Flights

*Flight schedules are subject to change.

*Available to One Key members.